Dataset Information
Two-year velocity and strain-rate averages from the Thwaites Eastern Ice Shelf, 2001-2020
Data DOI:
Cite as
Alley, K., Klinger, M., Muto, A., Pettit, E. C., Scambos, T., Truffer, M., et al. (2021) "Two-year velocity and strain-rate averages from the Thwaites Eastern Ice Shelf, 2001-2020" U.S. Antarctic Program (USAP) Data Center. doi:
AMD - DIF Record(s)
This dataset includes GeoTiffs of two-year averages of ice flow velocity (including x- and y-components and flow speed) and longitudinal, transverse, and shear strain rates for the Thwaites Eastern Ice Shelf (TEIS) from 2001-2020. The grids were derived from feature tracking on MODIS, Landsat-7, and Landsat-8 imagery. Each pixel in a grid represents the median value of a stack of all available pixels for each time period. Data are gridded at a 500 m spatial resolution in a polar stereographic (EPSG:3031) projection. Speed units are m/day and strain rates are in units of /day. In addition, we provide videos of each variable (excluding x- and y-velocity components) placed alongside a MODIS image of the same extent and from around the same time to provide context. In addition to the variables noted above, we include videos for flow direction (in degrees from grid north in an EPSG:3031 projection) and a zoomed-in version of flow direction, which were calculated from the provided grids.
Alley, Karen; Wild, Christian; Scambos, Ted; Muto, Atsu; Pettit, Erin; Truffer, Martin; Wallin, Bruce; Klinger, Marin
Date Created:
USAP-DC (current)
Spatial Extent(s)
West: -114, East: -104, South: -76, North: -74
Temporal Extent(s)
Start: 2001-12-21 - End: 2020-12-21
Supplemental Docs
Data Files
31.9 MB

MD5 Checksum: 112583a9fa74b885274e422e579a7042 File Type: Binary File; Tagged Image File Format (TIFF)

This dataset has been downloaded 5 times since March 2017 (based on unique date-IP combinations)